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    ilovechem's Avatar
    ilovechem Posts: 4, Reputation: 1
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    #1

    Dec 6, 2010, 08:06 PM
    What mass of 30.0% Ca(NO3)2 solution contains 60.0 grams of water?
    I don't understand how to find the answer
    DrBob1's Avatar
    DrBob1 Posts: 425, Reputation: 86
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    #2

    Dec 6, 2010, 08:28 PM
    If the solution is 30% calcium nitrate then it must be 70% water, right? So solve the euqation: 60 grams is 70% of X. And there, you'll have it.
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